1 /* 2 * QEMU Audio subsystem header 3 * 4 * Copyright (c) 2003-2005 Vassili Karpov (malc) 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #ifndef QEMU_AUDIO_H 26 #define QEMU_AUDIO_H 27 28 #include "qemu/queue.h" 29 #include "qapi/qapi-types-audio.h" 30 #include "hw/qdev-properties.h" 31 32 typedef void (*audio_callback_fn) (void *opaque, int avail); 33 34 #ifdef HOST_WORDS_BIGENDIAN 35 #define AUDIO_HOST_ENDIANNESS 1 36 #else 37 #define AUDIO_HOST_ENDIANNESS 0 38 #endif 39 40 typedef struct audsettings { 41 int freq; 42 int nchannels; 43 AudioFormat fmt; 44 int endianness; 45 } audsettings; 46 47 audsettings audiodev_to_audsettings(AudiodevPerDirectionOptions *pdo); 48 int audioformat_bytes_per_sample(AudioFormat fmt); 49 int audio_buffer_frames(AudiodevPerDirectionOptions *pdo, 50 audsettings *as, int def_usecs); 51 int audio_buffer_samples(AudiodevPerDirectionOptions *pdo, 52 audsettings *as, int def_usecs); 53 int audio_buffer_bytes(AudiodevPerDirectionOptions *pdo, 54 audsettings *as, int def_usecs); 55 56 typedef enum { 57 AUD_CNOTIFY_ENABLE, 58 AUD_CNOTIFY_DISABLE 59 } audcnotification_e; 60 61 struct audio_capture_ops { 62 void (*notify) (void *opaque, audcnotification_e cmd); 63 void (*capture) (void *opaque, const void *buf, int size); 64 void (*destroy) (void *opaque); 65 }; 66 67 struct capture_ops { 68 void (*info) (void *opaque); 69 void (*destroy) (void *opaque); 70 }; 71 72 typedef struct CaptureState { 73 void *opaque; 74 struct capture_ops ops; 75 QLIST_ENTRY (CaptureState) entries; 76 } CaptureState; 77 78 typedef struct SWVoiceOut SWVoiceOut; 79 typedef struct CaptureVoiceOut CaptureVoiceOut; 80 typedef struct SWVoiceIn SWVoiceIn; 81 82 typedef struct AudioState AudioState; 83 typedef struct QEMUSoundCard { 84 char *name; 85 AudioState *state; 86 QLIST_ENTRY (QEMUSoundCard) entries; 87 } QEMUSoundCard; 88 89 typedef struct QEMUAudioTimeStamp { 90 uint64_t old_ts; 91 } QEMUAudioTimeStamp; 92 93 void AUD_vlog (const char *cap, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); 94 void AUD_log (const char *cap, const char *fmt, ...) GCC_FMT_ATTR(2, 3); 95 96 void AUD_register_card (const char *name, QEMUSoundCard *card); 97 void AUD_remove_card (QEMUSoundCard *card); 98 CaptureVoiceOut *AUD_add_capture( 99 AudioState *s, 100 struct audsettings *as, 101 struct audio_capture_ops *ops, 102 void *opaque 103 ); 104 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque); 105 106 SWVoiceOut *AUD_open_out ( 107 QEMUSoundCard *card, 108 SWVoiceOut *sw, 109 const char *name, 110 void *callback_opaque, 111 audio_callback_fn callback_fn, 112 struct audsettings *settings 113 ); 114 115 void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw); 116 size_t AUD_write (SWVoiceOut *sw, void *pcm_buf, size_t size); 117 int AUD_get_buffer_size_out (SWVoiceOut *sw); 118 void AUD_set_active_out (SWVoiceOut *sw, int on); 119 int AUD_is_active_out (SWVoiceOut *sw); 120 121 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 122 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 123 124 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol); 125 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol); 126 127 #define AUDIO_MAX_CHANNELS 16 128 typedef struct Volume { 129 bool mute; 130 int channels; 131 uint8_t vol[AUDIO_MAX_CHANNELS]; 132 } Volume; 133 134 void audio_set_volume_out(SWVoiceOut *sw, Volume *vol); 135 void audio_set_volume_in(SWVoiceIn *sw, Volume *vol); 136 137 SWVoiceIn *AUD_open_in ( 138 QEMUSoundCard *card, 139 SWVoiceIn *sw, 140 const char *name, 141 void *callback_opaque, 142 audio_callback_fn callback_fn, 143 struct audsettings *settings 144 ); 145 146 void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw); 147 size_t AUD_read (SWVoiceIn *sw, void *pcm_buf, size_t size); 148 void AUD_set_active_in (SWVoiceIn *sw, int on); 149 int AUD_is_active_in (SWVoiceIn *sw); 150 151 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 152 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 153 154 static inline void *advance (void *p, int incr) 155 { 156 uint8_t *d = p; 157 return (d + incr); 158 } 159 160 int wav_start_capture(AudioState *state, CaptureState *s, const char *path, 161 int freq, int bits, int nchannels); 162 163 void audio_cleanup(void); 164 165 void audio_sample_to_uint64(const void *samples, int pos, 166 uint64_t *left, uint64_t *right); 167 void audio_sample_from_uint64(void *samples, int pos, 168 uint64_t left, uint64_t right); 169 170 void audio_parse_option(const char *opt); 171 void audio_init_audiodevs(void); 172 void audio_legacy_help(void); 173 174 AudioState *audio_state_by_name(const char *name); 175 const char *audio_get_id(QEMUSoundCard *card); 176 177 #define DEFINE_AUDIO_PROPERTIES(_s, _f) \ 178 DEFINE_PROP_AUDIODEV("audiodev", _s, _f) 179 180 #endif /* QEMU_AUDIO_H */ 181